Walmart could face a walk-out on their busiest day of the year.
Workers want better pay, schedules, and health care.
So they're threatening to leave their jobs on Black Friday.
They also complain that the company is retaliating on workers who speak out.
The company denies that, but says those who walk out will face consequences.
Walmart has also filed a complaint with the National Labor Relations Board.
The company's executives say it's being illegally targeted by union actions.